<template>
    <div id="app" class="app-container">
        <!--    顶部Header区域-->
        <mt-header fixed title="小勉休闲app">
            <span slot="left" @click="goBack" v-show="flag" class="goback">
        <span type="default" icon="back"><span style="font-size: 16px;margin-right: 3px"><</span>返回</span>
         </span>
        </mt-header>
        <mt-button type="danger" size="small" class="logout" @click="logout">注销</mt-button>

        <!--    中间路由区域 ,transition的作用是切换路由的时候增加滑动效果-->
        <transition class="transition">
            <router-view></router-view>
        </transition>
        <!--    底部tabbar区域-->
        <nav class="mui-bar mui-bar-tab">
            <router-link class="mui-tab-item" to="/home">
                <span class="mui-icon mui-icon-home"></span>
                <span class="mui-tab-label">首页</span>
            </router-link>
            <router-link class="mui-tab-item" to="/member">
                <span class="mui-icon mui-icon-contact"></span>
                <span class="mui-tab-label">会员</span>
            </router-link>
            <router-link class="mui-tab-item" to="/shopcar">
                <span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
                <span class="mui-tab-label">购物车</span>
            </router-link>
            <router-link class="mui-tab-item" to="/search">
                <span class="mui-icon mui-icon-search"></span>
                <span class="mui-tab-label">搜索</span>
            </router-link>
        </nav>
    </div>
</template>
<script>
export default {
    data () {
        return{
            flag: false
        }
    },
    created() {
        this.flag = this.$route.path === "/home" ? false : true;
    },
    methods: {
        logout () {
            this.$router.push('/login')
        },
        goBack () {
            this.$router.go(-1);
        }
    },
    watch: {
        "$route.path": function(newVal) {
            if (newVal === "/home") {
                this.flag = false;
            } else {
                this.flag = true;
            }
        }
    }
}
</script>

<style lang="less" scoped>
    .mint-header {
        z-index: 99;
    }
    .app-container {
        padding-top: 40px;
        padding-bottom: 50px;
        overflow-x: hidden;
    }
    .transition {
        margin-bottom: 50px;
    }
    .v-enter {
        opacity: 0;
        transform: translateX(100%);
    }

    .v-leave-to {
        opacity: 0;
        transform: translateX(-100%);
        position: absolute;//防止上下抖动，让进来的和出去的不在一个等级
    }

    .v-enter-active,
    .v-leave-active {
        transition: all 0.5s ease;
    }
    .logout{
        position: fixed;
        z-index: 999;
        top: 5px;
        right: 10px;
        width: 40px;
        height: 30px;
        font-size: 13px;
        padding-left: 7px;
        line-height: 30px;
    }
    .goback{
        /*padding: 5px;*/
        color: white;
        display: block;
        height: 40px;
        font-size: 14px;
        padding-top: 10px;
    }
</style>
